Fixed lint checking directories it shouldn't be

Lint earlier checked _venv/ and .git/ which it shouldn't be checking.
Also closes #8445
which arose due to the lint logger passing error messages to the root logger.

tools/gitignore/gitignore.py

@@ -84,7 +84,7 @@ def parse_line(line):
     if dir_only:
         line = line[:-1]
 
-    return invert, dir_only, fnmatch_translate(line, "/" in line)
+    return invert, dir_only, fnmatch_translate(line, dir_only)
 
 
 class PathFilter(object):

tools/lint/lint.py

@@ -41,7 +41,7 @@ def setup_logging(prefix=False):
     for handler in logger.handlers:
         handler.setFormatter(formatter)
     logger.setLevel(logging.DEBUG)
-
+    logger.propagate = False
 
 setup_logging()
 
@@ -60,7 +60,7 @@ def setup_logging(prefix=False):
 %s: %s"""
 
 def all_filesystem_paths(repo_root, subdir=None):
-    path_filter = PathFilter(repo_root, extras=[".git/*"])
+    path_filter = PathFilter(repo_root, extras=[".git/"])
     if subdir:
         expanded_path = subdir
     else:
@@ -72,8 +72,7 @@ def all_filesystem_paths(repo_root, subdir=None):
                 yield path
         dirnames[:] = [item for item in dirnames if
                        path_filter(os.path.relpath(os.path.join(dirpath, item) + "/",
-                                                   repo_root))]
-
+                                                   repo_root)+"/")]
 
 def _all_files_equal(paths):
     """